bsd-user/x86_64/target_arch_sysarch.h

   1 /*
   2  *  x86_64 sysarch() syscall emulation
   3  *
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef TARGET_ARCH_SYSARCH_H
  20 #define TARGET_ARCH_SYSARCH_H
  21
  22 #include "target_syscall.h"
  23
  24 static inline abi_long do_freebsd_arch_sysarch(CPUX86State *env, int op,
  25         abi_ulong parms)
  26 {
  27     abi_long ret = 0;
  28     abi_ulong val;
  29     int idx;
  30
  31     switch (op) {
  32     case TARGET_FREEBSD_AMD64_SET_GSBASE:
  33     case TARGET_FREEBSD_AMD64_SET_FSBASE:
  34         if (op == TARGET_FREEBSD_AMD64_SET_GSBASE) {
  35             idx = R_GS;
  36         } else {
  37             idx = R_FS;
  38         }
  39         if (get_user(val, parms, abi_ulong)) {
  40             return -TARGET_EFAULT;
  41         }
  42         cpu_x86_load_seg(env, idx, 0);
  43         env->segs[idx].base = val;
  44         break;
  45
  46     case TARGET_FREEBSD_AMD64_GET_GSBASE:
  47     case TARGET_FREEBSD_AMD64_GET_FSBASE:
  48         if (op == TARGET_FREEBSD_AMD64_GET_GSBASE) {
  49             idx = R_GS;
  50         } else {
  51             idx = R_FS;
  52         }
  53         val = env->segs[idx].base;
  54         if (put_user(val, parms, abi_ulong)) {
  55             return -TARGET_EFAULT;
  56         }
  57         break;
  58
  59     /* XXX handle the others... */
  60     default:
  61         ret = -TARGET_EINVAL;
  62         break;
  63     }
  64     return ret;
  65 }
  66
  67 static inline void do_freebsd_arch_print_sysarch(
  68         const struct syscallname *name, abi_long arg1, abi_long arg2,
  69         abi_long arg3, abi_long arg4, abi_long arg5, abi_long arg6)
  70 {
  71
  72     gemu_log("%s(%d, " TARGET_ABI_FMT_lx ", " TARGET_ABI_FMT_lx ", "
  73         TARGET_ABI_FMT_lx ")", name->name, (int)arg1, arg2, arg3, arg4);
  74 }
  75
  76 #endif /* TARGET_ARCH_SYSARCH_H */